Method for in-situ immobilization of lead in contaminated soils,

Details Method for in-situ immobilization of lead in contaminated soils, Method for in-situ immobilization of lead in contaminated soils,

1993-11-08

1996-04-30

Corbin, David H.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

405128, B09B 300

Patent

active

055127029

ABSTRACT:
Solid calcium phosphate materials are used for in-situ immobilization of lead contaminated soils, wastes, and sediments by mixing the solid calcium phosphate material with the lead contaminated material and leaving the mixture in place. The solid calcium phosphate material includes, for example, naturally occurring apatite, synthetic hydroxyapatite, dibasic calcium phosphate, or phosphate rock.

REFERENCES:
patent: 4737356 (1988-04-01), O'Hara et al.
patent: 5193936 (1993-03-01), Pal et al.
patent: 5284636 (1994-02-01), Goff et al.

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